How to use cgs with your own matrix-vector multiplication?

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From doc cgs I see, you can call the cgs function like:
x=cgs(@afun, b);
function afun is your self defined matrix vector multiplication function. But how pass parameters to afun? If function afun is defined as
function y=afun(a, b, c, d)
As you can see, afun uses 4 parameters. How to pass them to afun? Can one just use the following
x=cgs(@afun(a,b,c,d), b)
Thanks!

Accepted Answer

James Tursa
James Tursa on 16 Nov 2015
Edited: James Tursa on 16 Nov 2015
If a,c,d are pre-existing constant terms, you could use an anonymous function. E.g.,
afun2 = @(b)(afun(a,b,c,d))
then
x = cgs(afun2, b)

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